Honing tools

ABSTRACT

A honing tool has an abrasive stone fixed within a shell which is movable radially of the tool by means of an axially displacable wedge member. The shell comprises a channel of constant width and tapering depth which is formed from a sheet metal blank by pressing.

United States Patent Johnson 1 June 27, 1972 15 1 HONING TOOLS [56]References Cited [72] Inventor: Donald Edgar Johnson, Cheltenham, En-UNITED STATES'PATENTS land 8 2,419,136 4/1947 Hasty ..5l/338 [731 518mmEquipment 2,265,377 12/1941 Kline ..s1/204 x [22] Filed: Oct. 14, 19703,403,481 10/1968 McDonald ..5 1/204 Appl' 8o5s7 Primary ExaminerDonaldG. Kelly H D Attorney-Norris & Bateman 30 F i A tio Prl t to l 1 m a y57 ABSTRACT Oct. 17, 1969 Great Britain ..5l,0l3/69 A honing tool has anabrasive stone fixed within a shell which [52] US. 51 20 is movableradially of the tool by means of an axially displaca- [51] Int. Cl...B24d 17/00, 1324b 5/06 ble wedge member. The shell comprises a channelof constant [58] Field of Search ..5 H204, 206 R, 338-345 width andtapering depth which is formed from a sheet metal blank by pressing.

7 Claims, 6 Drawing Figures PATENTEnJum I972 3,672,102

INVENTOR DONALD EDGAR JOHNSON BY I 8 NOPRTS & RATEMAN HONING TOOLSBACKGROUND OF THE INVENTION The invention relates to honing tools, andmore particularly to honing stone shells of the kind intended for use ina small diameter honing tool having a mandrel tube body in which theradial position of a single stone is controlled by means of an axiallyslidable wedge.

SUMMARY OF THE INVENTION According to the invention, a shell for ahoning stone comprises a channel of constant width and tapering depth.

muss DESCRIPTION OF DRAWINGS A preferred embodiment of the inventionwill now be described, by way of example only, with reference to theac-;

companying drawings of which:

FIG. 1 is a part sectional side elevation of mandrel tube body of ahoning tool;

FIG. 2 is a section on the line 2-2 in FIG. 1; FIG. 3 is a perspectiveview of a honing stone shell; FIG. 4 is a view on one end of the shell;FIG. 5 is a view on the other end of the shell; and FIG. 6 is a view onthe underside of the shell.

DESCRIPTION OF PREFERRED EMBODIMENT Referring now to the drawings, ahOning tool comprises a mandrel tube body 11 having a bore 17. The body11 is provided with a radially projecting portion 12 having a curvedguide surface 13. A rectangular slot 14 is formed radially-of the body11 diametrically opposite the surface 13, in which slot there is locatedstone 15, the radial position of which is a stone-carrying controlled byan axially slidable wedge 16 housed within he FIG. 6) from the fullwidth of the shell 18 at its shallow end (see FIG. 5) to zero at itsdeep end (see FIG. 4). An intermediate cross-section of the base of theshell 18 is shown in FIG. 2. The base of the shell 18 has two tabs 20and 21. The tab 20 provides a closure member at the shallow end of theshell 18, and the tab 21 forms a detent to help retain the shell 18 inthe slot 14 without preventing its insertion therein. The length(excluding the tab 21) and the breadth of the shell 18 are a closesliding fit in the slot 14.

When assembling a stone 15 into its shell 18, it is pressed down untilit contacts the base of the shell at the shallow end and until itreaches the bottom of the full width section of the shell at the deepend, any surplus adhesive being squeezed out leaving the tapering spacebetween the base of the stone and the base of the shell 18 filled withadhesive. The operative portion of the stone projects from the open topof-the shell 18.

The shell has the advantage that it combines integrally and economicallya tapered base for controlling the radial position of the stone withwalls which rigidly contain the stone and keep it separate from the slotin the tube thus minimizing wear of said slot.

What I claim is:

L A shell for a honing stone comprising sidewalls and a base defining achannel of substantially constant width and tapering depth from one endto the other, said base of he channel being externally of cylindricalcontour between said sidewalls and from which there is cut off by aninclined plane a segment the width of which decreases from substantiallythe full width of the shell at its shallow end to substantially zero atits deeper end.

2. A shell according to claim 1, wherein its base projectslorsgitudinally beyond its sidewalls at one end to form a detent. Ashell according to claim 2, wherein the detent rs at its deep end.

4. A shell according to claim 1, having a closure member at one of itsends.

5. A shell according to claim 4, wherein the closure member is a tabintegral with the base and bent at an angle thereto.

6. A shell according to claim 3, having a closure member at its shallowend. I

7. A shell according to claim 1, comprising a sheet metal pressing.

1. A shell for a hoNing stone comprising sidewalls and a base defining achannel of substantially constant width and tapering depth from one endto the other, said base of he channel being externally of cylindricalcontour between said sidewalls and from which there is cut off by aninclined plane a segment the width of which decreases from substantiallythe full width of the shell at its shallow end to substantially zero atits deeper end.
 2. A shell according to claim 1, wherein its baseprojects longitudinally beyond its sidewalls at one end to form adetent.
 3. A shell according to claim 2, wherein the detent is at itsdeep end.
 4. A shell according to claim 1, having a closure member atone of its ends.
 5. A shell according to claim 4, wherein the closuremember is a tab integral with the base and bent at an angle thereto. 6.A shell according to claim 3, having a closure member at its shallowend.
 7. A shell according to claim 1, comprising a sheet metal pressing.